/* ==========================================================================
   Hopzz 响应式适配
   断点策略：
     - ≥1024px：PC 双栏（侧边栏 + 主内容流）
     - 768px–1023px：平板，侧边栏收窄
     - <768px：手机单栏 + 底部Tab，导航精简
   ========================================================================== */

/* ---------- 平板（768px – 1023px） ---------- */
@media (max-width: 1023px) {
    :root {
        --sidebar-width: 220px;
        --layout-gap: 16px;
    }

    .navbar {
        margin: 12px 16px 0;
        padding: 0 20px;
    }

    .layout {
        max-width: 100%;
        margin: 16px auto 0;
        padding: 0 16px;
    }

    .sidebar {
        padding: 18px 16px;
    }

    .sidebar-avatar {
        width: 60px;
        height: 60px;
    }

    .sidebar-name {
        font-size: 16px;
    }

    .nav-item {
        padding: 9px 14px;
        font-size: 14px;
    }

    .post-card {
        padding: 18px 18px;
    }

    .main-content {
        max-width: none;
    }
}

/* ---------- 手机（< 768px）单栏 + 底部Tab ---------- */
@media (max-width: 767px) {
    :root {
        --navbar-height: 56px;
    }

    body {
        font-size: 14px;
        /* 底部留出Tab空间 */
        padding-bottom: 56px;
    }

    /* 导航栏精简：Logo + 搜索图标 */
    .navbar {
        margin: 0;
        border-radius: 0;
        padding: 0 16px;
        height: var(--navbar-height);
        border-left: none;
        border-right: none;
        border-top: none;
        border-radius: 0;
    }

    .navbar-left {
        gap: 8px;
    }

    .logo {
        font-size: 20px;
    }

    /* 搜索框默认收起，仅显示图标 */
    .navbar-center {
        position: absolute;
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--duration-base) var(--ease-soft);
        max-width: none;
        left: 16px;
        right: 16px;
        top: 100%;
        margin-top: 8px;
    }

    .navbar-center.search-open {
        opacity: 1;
        pointer-events: auto;
    }

    .navbar-center.search-open .search-input {
        height: 44px;
        background: var(--glass-bg-strong);
        box-shadow: var(--glass-shadow);
    }

    /* 搜索图标按钮（手机端显示） */
    .mobile-search-toggle {
        display: inline-flex !important;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: transparent;
        border: none;
        color: var(--text-secondary);
        cursor: pointer;
        transition: background var(--duration-base) var(--ease-soft);
    }

    .mobile-search-toggle:hover {
        background: rgba(255, 255, 255, 0.5);
    }

    /* 展开式搜索栏（默认收起） */
    .mobile-search-bar {
        display: block !important;
        position: fixed;
        left: 12px;
        right: 12px;
        top: var(--navbar-height);
        z-index: 99;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-8px);
        transition: opacity var(--duration-base) var(--ease-soft),
                    transform var(--duration-base) var(--ease-soft),
                    visibility 0s linear var(--duration-base);
    }

    .mobile-search-bar.show {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        transition: opacity var(--duration-base) var(--ease-soft),
                    transform var(--duration-base) var(--ease-soft),
                    visibility 0s;
    }

    .mobile-search-bar form {
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 10px 14px;
        background: var(--glass-bg-strong);
        backdrop-filter: blur(20px) saturate(1.3);
        -webkit-backdrop-filter: blur(20px) saturate(1.3);
        border-radius: var(--radius-pill);
        box-shadow: var(--glass-shadow);
    }

    .mobile-search-input {
        flex: 1;
        min-width: 0;
        height: 36px;
        border: none;
        background: transparent;
        color: var(--text-primary);
        font-size: 14px;
        outline: none;
    }

    .mobile-search-input::placeholder {
        color: var(--text-muted);
    }

    .mobile-search-submit {
        flex-shrink: 0;
        width: 32px;
        height: 32px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border: none;
        border-radius: 50%;
        background: var(--accent-soft);
        color: var(--accent-deep);
        cursor: pointer;
        transition: background var(--duration-fast) var(--ease-soft);
    }

    .mobile-search-submit:hover {
        background: rgba(168, 184, 200, 0.3);
    }

    .navbar-right {
        gap: 8px;
    }

    .navbar-right .btn-publish {
        padding: 7px 16px;
        font-size: 13px;
    }

    .nav-icon-btn.category-toggle {
        display: inline-flex !important;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: transparent;
        border: none;
        color: var(--text-secondary);
        cursor: pointer;
        transition: background var(--duration-base) var(--ease-soft);
    }

    .nav-icon-btn:hover {
        background: rgba(255, 255, 255, 0.5);
    }

    /* 手机端：显示移动端专属容器 */
    .mobile-only {
        display: block !important;
    }

    /* 手机端：头像改为按钮，隐藏原来的 a.avatar-link */
    .navbar-right .avatar-link {
        display: none !important;
    }

    .nav-avatar-btn {
        display: inline-block !important;
        background: none;
        border: none;
        padding: 0;
        cursor: pointer;
        border-radius: 50%;
    }

    .nav-avatar {
        width: 32px;
        height: 32px;
        display: block;
        border-radius: 50%;
        object-fit: cover;
    }

    /* 移动端分类下拉菜单 */
    .mobile-category-dropdown {
        display: none !important;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.35);
        z-index: 1000;
        opacity: 0;
        transition: opacity 0.25s ease;
    }

    .mobile-category-dropdown.show {
        display: block !important;
        opacity: 1;
    }

    .mobile-category-content {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        background: var(--glass-bg-strong);
        backdrop-filter: blur(20px) saturate(1.3);
        -webkit-backdrop-filter: blur(20px) saturate(1.3);
        border-bottom-left-radius: var(--radius-lg);
        border-bottom-right-radius: var(--radius-lg);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
        padding: 16px;
        transform: translateY(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        max-height: 70vh;
        overflow-y: auto;
    }

    .mobile-category-dropdown.show .mobile-category-content {
        transform: translateY(0);
    }

    .mobile-category-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 12px;
        padding-bottom: 10px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    }

    .mobile-category-header span {
        font-size: 15px;
        font-weight: 600;
        color: var(--text-primary);
    }

    .mobile-category-close {
        background: none;
        border: none;
        font-size: 24px;
        color: var(--text-secondary);
        cursor: pointer;
        width: 32px;
        height: 32px;
        line-height: 1;
        border-radius: 50%;
        transition: background 0.2s ease;
    }

    .mobile-category-close:hover {
        background: rgba(0, 0, 0, 0.05);
    }

    .mobile-category-list {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    .mobile-cat-item {
        flex: 0 0 calc(33.333% - 6px);
        padding: 10px 12px;
        text-align: center;
        background: rgba(255, 255, 255, 0.5);
        border: 1px solid rgba(0, 0, 0, 0.05);
        border-radius: var(--radius-md);
        text-decoration: none;
        color: var(--text-primary);
        font-size: 13px;
        font-weight: 500;
        transition: all 0.2s ease;
    }

    .mobile-cat-item:active {
        transform: scale(0.97);
    }

    .mobile-cat-item.active {
        background: linear-gradient(135deg, var(--primary-light), var(--primary));
        color: #fff;
        border-color: transparent;
    }

    /* 移动端头像下拉菜单 */
    .mobile-avatar-menu {
        display: none !important;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.35);
        z-index: 1001;
        opacity: 0;
        transition: opacity 0.25s ease;
    }

    .mobile-avatar-menu.show {
        display: block !important;
        opacity: 1;
    }

    .mobile-avatar-content {
        position: absolute;
        top: 56px;
        right: 12px;
        min-width: 180px;
        background: var(--glass-bg-strong);
        backdrop-filter: blur(20px) saturate(1.3);
        -webkit-backdrop-filter: blur(20px) saturate(1.3);
        border-radius: var(--radius-md);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
        padding: 8px;
        transform-origin: top right;
        transform: scale(0.9) translateY(-8px);
        opacity: 0;
        transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s ease;
    }

    .mobile-avatar-menu.show .mobile-avatar-content {
        transform: scale(1) translateY(0);
        opacity: 1;
    }

    .mobile-menu-item {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 10px 14px;
        text-decoration: none;
        color: var(--text-primary);
        font-size: 14px;
        border-radius: var(--radius-sm);
        transition: background 0.15s ease;
    }

    .mobile-menu-item:active {
        background: rgba(0, 0, 0, 0.05);
    }

    .mobile-menu-item svg {
        flex-shrink: 0;
        color: var(--text-secondary);
    }

    .mobile-menu-item span {
        flex: 1;
    }

    .mobile-menu-divider {
        height: 1px;
        background: rgba(0, 0, 0, 0.06);
        margin: 6px 0;
    }

    .mobile-menu-logout {
        color: #c0392b;
    }

    .mobile-menu-logout svg {
        color: #c0392b;
    }

    /* 单栏布局：隐藏侧边栏 */
    .layout {
        flex-direction: column;
        padding: 0 12px;
        margin: 12px 0 0;
    }

    .sidebar {
        display: none;
    }

    .main-content {
        max-width: none;
        width: 100%;
    }

    /* 动态卡片全宽 */
    .post-card {
        margin-bottom: 12px;
        padding: 16px 14px;
        border-radius: var(--radius-md);
    }

    .post-header {
        margin-bottom: 12px;
    }

    .post-avatar {
        width: 40px;
        height: 40px;
    }

    .post-content {
        font-size: 14px;
        margin-bottom: 12px;
    }

    /* 配图：单图全宽，其余保持九宫格 */
    .post-images.count-1 {
        max-width: 100%;
    }

    .post-images {
        gap: 4px;
    }

    .post-image {
        border-radius: 6px;
    }

    /* 操作栏紧凑 */
    .post-actions {
        padding-top: 10px;
        gap: 4px;
    }

    .post-action {
        padding: 6px 10px;
        font-size: 12px;
    }

    /* 发布表单紧凑 */
    .post-form {
        padding: 18px 14px;
        border-radius: var(--radius-md);
    }

    .post-form-title {
        font-size: 18px;
        margin-bottom: 14px;
    }

    .post-form textarea {
        min-height: 120px;
    }

    /* 分页紧凑 */
    .pagination {
        margin: 24px 0;
        gap: 8px;
    }

    .page-link {
        padding: 7px 16px;
        font-size: 13px;
    }

    /* 底部 Tab 显示 */
    .bottom-tab {
        display: flex;
    }

    /* 公告右下角避开底部Tab */
    .announce-corner {
        right: 12px;
        bottom: 72px;
    }

    /* 弹窗铺满 */
    .announce-popup-overlay {
        padding: 16px;
    }

    .announce-popup {
        max-width: 100%;
        padding: 28px 20px 20px;
        border-radius: var(--radius-lg);
    }

    .announce-popup-title {
        font-size: 20px;
    }

    /* 页脚紧凑 */
    .footer {
        margin-top: 32px;
        padding: 20px 16px 24px;
    }

    .footer-copyright {
        font-size: 12px;
    }

    .footer-links {
        gap: 6px 14px;
    }

    .footer-links a {
        font-size: 12px;
    }

    /* 评论区域紧凑 */
    .comments-section {
        margin-top: 12px;
        padding-top: 12px;
    }

    .comment-form {
        gap: 8px;
    }

    .comment-input {
        font-size: 13px;
        padding: 8px 14px;
    }

    /* 图片预览 */
    .image-preview-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
    }

    /* 提示框位置调整 */
    .toast {
        top: 70px;
        font-size: 13px;
        padding: 10px 20px;
    }
}

/* ---------- 小屏手机（< 375px） ---------- */
@media (max-width: 374px) {
    .post-images.count-4,
    .post-images.count-5,
    .post-images.count-6,
    .post-images.count-7,
    .post-images.count-8,
    .post-images.count-9 {
        grid-template-columns: repeat(3, 1fr);
    }

    .logo {
        font-size: 18px;
    }

    .navbar-right .btn-publish {
        padding: 6px 12px;
        font-size: 12px;
    }
}

/* ---------- 大屏优化（> 1280px） ---------- */
@media (min-width: 1280px) {
    :root {
        --sidebar-width: 280px;
        --content-max-width: 680px;
        --layout-gap: 32px;
    }

    .layout {
        max-width: 1180px;
    }
}

/* ---------- 超宽屏（> 1600px） ---------- */
@media (min-width: 1600px) {
    .layout {
        max-width: 1240px;
    }
}

/* ---------- 横屏手机适配 ---------- */
@media (max-width: 900px) and (orientation: landscape) and (max-height: 500px) {
    .navbar {
        margin: 0;
    }

    .layout {
        margin-top: 8px;
    }

    .post-card {
        padding: 14px;
        margin-bottom: 10px;
    }
}

/* ---------- 打印样式 ---------- */
@media print {
    .navbar,
    .sidebar,
    .bottom-tab,
    .announce-corner,
    .announce-popup-overlay,
    .bg-decoration,
    .footer,
    .post-actions,
    .pagination,
    .pull-refresh {
        display: none !important;
    }

    .layout {
        display: block;
        max-width: 100%;
        margin: 0;
        padding: 0;
    }

    .main-content {
        max-width: 100%;
    }

    .post-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
        background: #fff;
        backdrop-filter: none;
    }

    body {
        background: #fff;
    }
}